I agree with your general point but on the gas stations I don't think it holds. Gas stations will keep serving gas as long as there's even some vague demand for

I agree with your general point but on the gas stations I don't think it holds. Gas stations will keep serving gas as long as there's even some vague demand for it, so they would start disappearing rather at the end point of such an s-curve, than at the beginning. And they'll still be around, they'll just serve electricity. Fun fact, a lot of gas stations used to serve as stables. When cars arrived, they served both and gradually stopped being stables. Though with electricity being overall so much easier to distribute than gas, I'm guessing a significant amount will indeed have to close, especially inside cities; no point going to a refueling station if a charger is available at nearly every corner, when you're parked while eating at the restaurant, or when you're home asleep and charging from your garage.